I own my own domain name. I create a new e-mail address each time I register something that wants my e-mail address. You would be amazed at the number of companies that sell there lists. I don't want to list any of them because it's possible that somehow their registration information got out without their consent. Like packet sniffers and the like. And I don't want to be "slanderous". But I have learned a lot from this practice. Since each time I register it's a unique e-mail address, I know exactly which companies have done it to me. Additionally since it's a unique address, I just kill that address and I no longer get the spam. It is really shocking and disapointing how many "respectable" companies participate in this practice.
The most ridiculous thing that has ever happened to me was I signed up for a new internet account, and didn't even log on to it for 2 days. When I logged on two days later I had 5 spam messages already waiting for me, even though I hadn't given a single person that address yet. If a spammer can breach an ISP's security to get the user list, they will. Some ISP's aren't very well secured against this kind of query since it isn't actually comprising their system. Matter of fact, in days of old, it was considered acceptable to query a host system for the logged in users, so you could tell if your friends were on. Sadly, some ISP's still allow this.
Also, as far as I know, I have not received any spam at all from Apolyton. This is a very nice community, with very well maintained standards.
Why did I bother to write so much on this subject? Well, it has something to do with the fact that I have 18 pieces of spam sitting in my inbox right now.
Pyaray